HC-5504DLC Datasheet, PDF (6/9 Pages) Intersil Corporation – SLIC Subscriber Line Interface Circuit

Schematic
HC-5504DLC
SLIC FUNCTIONAL SCHEMATIC
(DIP/SOIC PIN NUMBERS SHOWN)
21
22
11
12
23
6
4
RX
C4
V_BAT
BAT
GND
ANA
GND
DIG
GND
V_B+
20
19
+
-
18
OUT
V_B+
V_B+
V_B1
V_B2
VOLTAGE & CURRENT
V_B3
BIAS NETWORK
V_B4
V_B5
+5V
V_B+
+ ^R17
TF
A-400
TIP FEED
V_B2
I_B1 I_B2 I_B3 I_B4 I_B5 I_B6 I_B7 I_B8 V_BATI_B9 I_B10I_B11
AMP
9
V
-
BAT ^IB4
RING TRIP DETECTOR
R12
+5V
A-500
OP AMP
V_BAT
I_B3
+5V ^{IB10 V}B⁺
TIP
1
RING
FEED
SENSE
3
R7
R8
R10
R9
R22
V_B+
-
V_B+ ^{QD3 QD36}
A-200
LONG’L
R20
I/V AMP
+
R11
V_BAT
I_B7
V_BAT
R23 ^{VB+ VBAT}
R5
R3
RING
R4
R1
2
R2
+
V_B+
A-100
TRANSV’L
I/V AMP
-
V_BAT
I_{B6 R6}
R16
V_BAT/2 REFERENCE
R15
V_B2
R14
R
18
-
R21
A-300
RF
RING FEED
AMP
10
V_BAT
+
R
19
I_B5
V_BAT
+
V_B4
I_B8
SWITCH HOOK
DETECTOR
V_B+
+
-
V_B1
I_B6
Q_D27
Q_D28
LOAD CURRENT
LIMITING _IB2
V- _B5
+
GK
GND SHORTS
CURRENT
LIMITING
I_B1
-
+
V_B3
V_BAT
STTL
AND LOGIC
INTERFACE
SH
THERMAL
LIMITING
V_B5
RFC
V_BAT
GKD
14
C2
17
SHD
13
RC
16
PD
15
R13
V_BAT
V_BAT
C3
TX
5
24
RS
RD
7
8
8-24